Hi Guix,
a few weeks ago I noticed that the download of binary substitutes is
fairly slow when it is performed from within "guix build" compared with
wget:
[rwurmus@guix-builder:~] (557) $ time wget
http://hydra.gnu.org/nar/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014
--2015-05-06 08:20:38--
http://hydra.gnu.org/nar/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014
Resolving hydra.gnu.org (hydra.gnu.org)... 18.4.89.46
Connecting to hydra.gnu.org (hydra.gnu.org)|18.4.89.46|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-nix-archive]
Saving to: ‘h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014.1’
[ <=>
] 761,111,979 4.17MB/s
The speed ranges from ~4MB/s to 7MB/s with wget.
With guix build, however, I get much less on the same host:
[rwurmus@guix-builder:/localhome/rwurmus-tmp/guix] (557) $ ./pre-inst-env
guix build texlive-texmf-2014
The following file will be downloaded:
/gnu/store/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014
@ substituter-started
/gnu/store/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014
/usr/libexec/guix/substitute
found valid signature for
'/gnu/store/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014', from
'http://hydra.gnu.org/nar/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014'
downloading
`/gnu/store/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014' (3391.2 MiB
installed)...
http://hydra.gnu.org/nar/h1qjkg8bvcdb485q81lw5844szgywpg7-texlive-texmf-2014
124344.0 KiB transferred (321. KiB/s)
Is this expected?
~~ Ricardo
